Upon arriving at Lockwood Manor, Claire Dearing is briefed by Eli Mills and Benjamin Lockwood that they have an island that will serve as a refuge for the dinosaurs that have been rescued from Isla Nublar. However, Mills secretly hijacked their plans as he intended to sell the captured dinosaurs in order to gain funding for the creation and the perfection of the Indoraptor.
Due to the meddling of Eli Mills, no dinosaurs made it to this island.
The island is now available in the update of the game called Claire's Sanctuary.
Behind The Scenes
Andy Nicholson, a designer for Jurassic World: Fallen Kingdom, initially established that the size of the island was 20 x 20 km, contradicting it having subsequently said that its measurements were 15 x 15 km.